很多同學說韋氏詞典查出來，第二個解釋和第三個解釋剛好相反，那到底是哪一個呢？是可行還是不可行呢？
passage120
The finding that there were rock-melting temperatures on asteroids for sustained periods is puzzling: asteroids』 heat source is unknown, and unlike planet-sized bodies, such small bodies quickly dissipate heat. Rubin suggests that asteroids』 heat could have derived from collisions between asteroids. Skeptics have argued that a single impact would raise an asteroid’s overall temperature very little and that asteroids would cool too quickly between impacts to accumulate much heat. However, these objections assumed that asteroids are dense, solid bodies. A recent discovery that asteroids are highly porous makes Rubin’s hypothesis more plausible. When solid bodies collide, much debris is ejected, dissipating energy. Impacts on porous bodies generate less debris, so more energy goes into producing heat. Heat could be retained as debris fall back into impact craters, creating an insulating blanket.
這個句子A recent discovery that asteroids are highly porous makes Rubin’s hypothesis more plausible.是說Rubin的觀點到底是可行還是不可行呢。
這個句子是在證明skeptics的assumption不成立，從而完成了上一句話對skeptics的質疑，支持了Rubin的觀點。也就是說plausible這個單詞是「可行的」的意思，可以當做reasonable。
大家如果想再去確認plausible的用法，可以參考passage59這篇文章康康。
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